I think I would change that one to sometime along the lines of "No corporation is above criticism." Maybe with some addendum like "regardless of how favorably you view them." The reason being is that I think it's perfectly fine to try to set a record straight if there's blatant misinformation going on about a corporation that's been doing good by people, but no matter how much good they might have done they should never be above critique.
Case and point being LMG with their recent issues regarding allegations of sexism, harassment, overworking employees, bullying, and adopting the exact same practices that they themselves have criticized major tech corps for, among other issues. Now I don't mind correcting the record if someone was saying some stupid BS about them, however you can bet that I was also one of the ones calling them out on the things they did.